They already do that here in CA.
Having said that, the absurd “war on drugs” is no more than an excuse the State uses to do more of what it wants.
I can live with legal marijuana but meth is a whole different ballgame and I won’t claim to have any answers on how to deal with it. That said, overregulation of cold meds isn’t the way to deal with it.
The guy who killed 7 people in Grand Rapids Michigan the other night is believed to have been on meth.